Forget zombies and vampires — it’s dismal ROI numbers and shrinking budgets that make me afraid to turn off the office lights at the end of the day. Marketers are experts at finding the data that we need to support our latest campaigns, but lurking underneath the upbeat reports on conversions is the dark side of marketing stats. In the spirit of Halloween we’re shining a light on seven of the scariest pieces of data we could find. Hopefully they won’t haunt your dreams for too long.